Characterizing the Groundwater Quality of the Upper Pearl River Watershed in Central Eastern Mississippi
Characterizing the Groundwater Quality of the Upper Pearl River Watershed in Central Eastern Mississippi

Author: Shannon Kirk Vattikuti

Publisher:

Published: 2018

Total Pages: 153

ISBN-13:

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The Upper Pearl River and its watershed is the main source of water flowing into the Ross Barnett Reservoir, the City of Jackson’s major drinking water supply. Groundwater characterization of the watershed was achieved by analyzing viable groundwater wells and a groundwater spring best representing the land use and land cover extraction map created. Incorporated surface geology demarcated specific stratum, helping describe the different hydrogeochemical interactions observed. Analysis indicated that chloride and nitrate exceeded the Maximum Contamination Levels (MCLs) possibly contributing to eutrophication in the reservoir. Several of the metal and trace elements analyzed were below the MCLs, with the exceptions of manganese, aluminum, and iron. No pharmaceuticals, pesticides, or industrial residues exists in Carthage and Philadelphia’s groundwater, the largest cities in the region. Conclusively, the watershed’s groundwater contains high concentrations of anions along with metal concentrations associated with the ferruginous sandy-clay surface geology moving closer to the reservoir.

"Characterizing the Groundwater Quality of the Upper Pearl River Watershed in Central Eastern Mississippi."

Author:

Publisher:

Published: 2018

Total Pages:

ISBN-13:

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The Upper Pearl River and its watershed is the main source of water flowing into the Ross Barnett Reservoir, the City of Jacksons major drinking water supply. Groundwater characterization of the watershed was achieved by analyzing viable groundwater wells and a groundwater spring best representing the land use and land cover extraction map created. Incorporated surface geology demarcated specific stratum, helping describe the different hydrogeochemical interactions observed. Analysis indicated that chloride and nitrate exceeded the Maximum Contamination Levels (MCLs) possibly contributing to eutrophication in the reservoir. Several of the metal and trace elements analyzed were below the MCLs, with the exceptions of manganese, aluminum, and iron. No pharmaceuticals, pesticides, or industrial residues exists in Carthage and Philadelphias groundwater, the largest cities in the region. Conclusively, the watersheds groundwater contains high concentrations of anions along with metal concentrations associated with the ferruginous sandy-clay surface geology moving closer to the reservoir.

Water Quality, Modeling, and Land Use Investigations in the Upper Pearl River Basin of East-central Mississippi
Water Quality, Modeling, and Land Use Investigations in the Upper Pearl River Basin of East-central Mississippi

Author: Mary Love Mortimer Tagert

Publisher:

Published: 2006

Total Pages: 204

ISBN-13: 9780542934896

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Of the fifteen compounds analyzed, hexazinone was most frequently detected, in 94% of samples, followed by metolachlor, tebuthiuron, and atrazine. Metribuzin was detected in only 6% of samples. Total dissolved solids (TDS) concentrations were highest at Carthage, which drains the largest area of three sites sampled for TDS. Most samples measured below Environmental Protection Agency (EPA) standards for pesticides and TDS in drinking water and also below levels toxic to aquatic organisms.

WATER QUALITY, MODELING, AND LAND USE INVESTIGATIONS IN THE UPPER PEARL RIVER BASIN OF EAST-CENTRAL MISSISSIPPI.
WATER QUALITY, MODELING, AND LAND USE INVESTIGATIONS IN THE UPPER PEARL RIVER BASIN OF EAST-CENTRAL MISSISSIPPI.

Author:

Publisher:

Published: 2005

Total Pages:

ISBN-13:

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Little historical water quality data is available for the Upper Pearl River Basin (UPRB), yet there are UPRB waters listed as impaired. Objectives of this research were to measure pesticide and sediment concentrations in UPRB surface waters and validate the Annualized Agricultural Nonpoint-Source (AnnAGNPS) runoff model with the measured data for a portion of the UPRB. An additional objective was to quantify effects of land use changes on UPRB surface waters from 1987 to 2002 using AnnAGNPS. Of the fifteen compounds analyzed, hexazinone was most frequently detected, in 94% of samples, followed by metolachlor, tebuthiuron, and atrazine. Metribuzin was detected in only 6% of samples. Total dissolved solids (TDS) concentrations were highest at Carthage, which drains the largest area of three sites sampled for TDS. Most samples measured below Environmental Protection Agency (EPA) standards for pesticides and TDS in drinking water and also below levels toxic to aquatic organisms. For eight of twelve months analyzed between October 2001 and January 2003, average monthly sediment loadings for measured and AnnAGNPS-simulated data differed no more than 109%, resulting in an R & 178; value of 0.328. A comparison of measured and simulated atrazine and metolachlor loadings by event resulted in R & 178; values of 0.095 and 0.062, respectively. Most daily atrazine and metolachlor loadings for measured and predicted data were very low. On May 18, 2003, AnnAGNPS predicted a metolachlor loading of 80 mg, while measured data showed a loading of 5.6 mg. Measured data showed an earlier spike on January 20, 2003 that was not mirrored by the model. Atrazine comparisons followed the same trend, except measured loadings did not spike until February 22, 2003. The 2002 AnnAGNPS simulation resulted in 15% more average annual runoff than the 1987 simulation, although both simulations had the same precipitation. The 2002 simulation also had higher values for sediment and organic carbon loading. Nit.